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MOUNTING
THERMOCOUPLE INPUT

TM-5-3895-374-24-2 M081 Asphalt Mixing Plant Manual
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TM 5-3895-374-24-2 955-257 1.5  WIRING Successful  operation  begins  with  proper  installation.    Good  installation  requires  not  only  that  good  wiring  practices  be followed  but  also  that  reasonable  protection  be  provided  against  external  electrical  influences  that  could  interfere  with controller  operation.  In addition all wiring must conform to applicable local and national codes.  The controller should be wired with an external power disconnect and fuse. 1.6  NOISE SUPPRESSION The primary source of electrical interference (noise) that can impact any digital device is inductors most commonly found as coils and windings in solenoids, relays and transformers. It is  important to suppress any potential for electrical noise at its  source  to  ensure  reliable  controller  operation.    Specifically  this  means  putting  noise  suppression  devices  across  the terminals of all inductors in your system. If you do not have the necessary components available, they may be purchased locally or in kit form from the factory. ITEM MAX.  AC RATING KIT RC KIT 240 VAC O.luF/220 ohms 1821 -   100 MOV KIT 130 VAC 35 Joules 1821 -   98 MOV KIT 250 VAC 70 Joules 1821 -   99 When wiring to the controller, twisted pair with insulated shield is recommended for all signal  leads. Make sure the shield is  grounded  ONLY  at  the  controller  -  use  the  AC  power  ground  terminal  8.    Be  sure  to  protect  against  ground  loops  in signal leads, shields and all other input and output wiring. Low level signal leads and high level power cables must not be run in the same conduit or cable trays.  Care when wiring means better system reliability. ECLIPSE INSTRUMENTATION DIVISION page 3 - 1083







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